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Digital Electronics
‣
Number Systems and Codes
Comments
Question
Convert the binary number 1011010 to hexadecimal.
Options
A. 5B
B. 5F
C. 5A
D. 5C
Correct Answer
5A
Number Systems and Codes problems
Search Results
1. Which of the following is the most widely used alphanumeric code for computer input and output?
Options
A. Gray
B. ASCII
C. Parity
D. EBCDIC
Show Answer
Scratch Pad
Discuss
Correct Answer: ASCII
2. Convert the following octal number to binary.
104
8
Options
A. 001000100
2
B. 100000001
2
C. 0010100
2
D. 1000001
2
Show Answer
Scratch Pad
Discuss
Correct Answer: 001000100
2
3. Convert 527
16
to binary.
Options
A. 343
B. 001101000111
C. 010100100111
D. 011100100101
Show Answer
Scratch Pad
Discuss
Correct Answer: 010100100111
4. The American Standard Code for Information Interchange (ASCII) uses how many individual pulses for any given character?
Options
A. 1
B. 2
C. 7
D. 8
Show Answer
Scratch Pad
Discuss
Correct Answer: 7
5. The binary number 11001110 is equal to the decimal number ________.
Options
A. 12
B. 206
C. 127
D. 66
Show Answer
Scratch Pad
Discuss
Correct Answer: 206
6. The octal number for binary 1101110101110110 is ________.
Options
A. 654521
8
B. 556561
8
C. 156656
8
D. 156566
8
Show Answer
Scratch Pad
Discuss
Correct Answer: 156566
8
7. Alphanumeric codes should include as a minimum:
Options
A. the capacity to represent the alphabet upper- and lowercase characters and the decimal numbers in a straight binary format.
B. the capacity to code all possible decimal numbers in a direct octal representation of BCD codes.
C. the alphabet upper- and lowercase letters, the decimal digits, the seven punctuation marks, and other characters or symbols.
D. the ability to represent decimal numbers greater than 128
10
in a straight binary format.
Show Answer
Scratch Pad
Discuss
Correct Answer: the alphabet upper- and lowercase letters, the decimal digits, the seven punctuation marks, and other characters or symbols.
8. Convert the following hexadecimal number to decimal.
1CF
16
Options
A. 463
B. 4033
C. 479
D. 4049
Show Answer
Scratch Pad
Discuss
Correct Answer: 463
9. Convert the following decimal number to BCD.
469
Options
A. 100101101000
B. 010001101001
C. 100001101001
D. 100101100100
Show Answer
Scratch Pad
Discuss
Correct Answer: 010001101001
10. Digital electronics is based on the ________ numbering system.
Options
A. decimal
B. octal
C. binary
D. hexadecimal
Show Answer
Scratch Pad
Discuss
Correct Answer: binary
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